#include<stdio.h>
#include<stdlib.h>
#define MAXSIZE 10
int s[MAXSIZE],top=-1;
void push(int x)
{
	if(top==MAXSIZE-1)
		printf("\n Stack Overflow.");
	else
	{
		top++;
		s[top]=x;
	}
}
void pop()
{
	int temp;
	if(top==-1)
		printf("\n Stack Underflow.");
	else
	{
		temp=s[top];
		printf("\n %d is Popped from Stack.",temp);
		top--;
	}
}
void display()
{
	int i;
	printf("\n The Stack Elements are...\n");
	if(top==-1)
	{
		printf("\n No Elements to display.");
	}
	else
	{
		for(i=top;i>=0;i--)
			printf(" %d ",s[i]);
	}
}
int main()
{
	int choice,x;
	while(1)
	{
		printf("\n1. Push\n2. Pop\n3. Display\n4. Exit");
		printf("\n Please, Enter your choice : ");
		scanf("%d",&choice);
		switch(choice)
		{
			case 1 : printf("\n Enter Element : ");
					scanf("%d",&x);
					push(x);
					break;
			case 2 : pop();
					break;
			case 3 : display();
					break;
			case 4 : exit(0);
			default : printf("\n Wrong Choice.");
		}
 
	}
}